2.31.
Solve:
(a)
The velocityversustime graph is given by the derivative with respect to time of the position
function:
2
(6
18 )m/s
x
dx
vt
t
dt
== −
For
0 m/s,
x
v
=
there are two solutions to the quadratic equation:
t
=
0 s and
t
=
3 s.
(b)
At the first of these solutions,
32
(at
0 s)
2(0 s)
9(0 s)
12
12 m
xt
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at UGA.
 Fall '09
 geller

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